1 /* Copyright (C) 1991, 1992, 1995-2004, 2005, 2006, 2007, 2009
2 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
5 The GNU C Library is free software; you can redistribute it and/or
6 modify it under the terms of the GNU Lesser General Public
7 License as published by the Free Software Foundation; either
8 version 2.1 of the License, or (at your option) any later version.
10 The GNU C Library is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Lesser General Public License for more details.
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library; if not, write to the Free
17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
21 * POSIX Standard: 5.6 File Characteristics <sys/stat.h>
29 #include <bits/types.h> /* For __mode_t and __dev_t. */
31 #if defined __USE_XOPEN || defined __USE_XOPEN2K || defined __USE_MISC \
32 || defined __USE_ATFILE
33 # if defined __USE_XOPEN || defined __USE_XOPEN2K
34 # define __need_time_t
36 # if defined __USE_MISC || defined __USE_ATFILE
37 # define __need_timespec
39 # include <time.h> /* For time_t resp. timespec. */
42 #if defined __USE_XOPEN || defined __USE_XOPEN2K
43 /* The Single Unix specification says that some more types are
45 # ifndef __dev_t_defined
46 typedef __dev_t dev_t;
47 # define __dev_t_defined
50 # ifndef __gid_t_defined
51 typedef __gid_t gid_t;
52 # define __gid_t_defined
55 # ifndef __ino_t_defined
56 # ifndef __USE_FILE_OFFSET64
57 typedef __ino_t ino_t;
59 typedef __ino64_t ino_t;
61 # define __ino_t_defined
64 # ifndef __mode_t_defined
65 typedef __mode_t mode_t;
66 # define __mode_t_defined
69 # ifndef __nlink_t_defined
70 typedef __nlink_t nlink_t;
71 # define __nlink_t_defined
74 # ifndef __off_t_defined
75 # ifndef __USE_FILE_OFFSET64
76 typedef __off_t off_t;
78 typedef __off64_t off_t;
80 # define __off_t_defined
83 # ifndef __uid_t_defined
84 typedef __uid_t uid_t;
85 # define __uid_t_defined
90 # ifndef __blkcnt_t_defined
91 # ifndef __USE_FILE_OFFSET64
92 typedef __blkcnt_t blkcnt_t;
94 typedef __blkcnt64_t blkcnt_t;
96 # define __blkcnt_t_defined
99 # ifndef __blksize_t_defined
100 typedef __blksize_t blksize_t;
101 # define __blksize_t_defined
107 #include <bits/stat.h>
109 #if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN
110 # define S_IFMT __S_IFMT
111 # define S_IFDIR __S_IFDIR
112 # define S_IFCHR __S_IFCHR
113 # define S_IFBLK __S_IFBLK
114 # define S_IFREG __S_IFREG
116 # define S_IFIFO __S_IFIFO
119 # define S_IFLNK __S_IFLNK
121 # if (defined __USE_BSD || defined __USE_MISC || defined __USE_UNIX98) \
122 && defined __S_IFSOCK
123 # define S_IFSOCK __S_IFSOCK
127 /* Test macros for file types. */
129 #define __S_ISTYPE(mode, mask) (((mode) & __S_IFMT) == (mask))
131 #define S_ISDIR(mode) __S_ISTYPE((mode), __S_IFDIR)
132 #define S_ISCHR(mode) __S_ISTYPE((mode), __S_IFCHR)
133 #define S_ISBLK(mode) __S_ISTYPE((mode), __S_IFBLK)
134 #define S_ISREG(mode) __S_ISTYPE((mode), __S_IFREG)
136 # define S_ISFIFO(mode) __S_ISTYPE((mode), __S_IFIFO)
139 # define S_ISLNK(mode) __S_ISTYPE((mode), __S_IFLNK)
142 #if defined __USE_BSD && !defined __S_IFLNK
143 # define S_ISLNK(mode) 0
146 #if (defined __USE_BSD || defined __USE_UNIX98) \
147 && defined __S_IFSOCK
148 # define S_ISSOCK(mode) __S_ISTYPE((mode), __S_IFSOCK)
151 /* These are from POSIX.1b. If the objects are not implemented using separate
152 distinct file types, the macros always will evaluate to zero. Unlike the
153 other S_* macros the following three take a pointer to a `struct stat'
154 object as the argument. */
155 #ifdef __USE_POSIX199309
156 # define S_TYPEISMQ(buf) __S_TYPEISMQ(buf)
157 # define S_TYPEISSEM(buf) __S_TYPEISSEM(buf)
158 # define S_TYPEISSHM(buf) __S_TYPEISSHM(buf)
162 /* Protection bits. */
164 #define S_ISUID __S_ISUID /* Set user ID on execution. */
165 #define S_ISGID __S_ISGID /* Set group ID on execution. */
167 #if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN
168 /* Save swapped text after use (sticky bit). This is pretty well obsolete. */
169 # define S_ISVTX __S_ISVTX
172 #define S_IRUSR __S_IREAD /* Read by owner. */
173 #define S_IWUSR __S_IWRITE /* Write by owner. */
174 #define S_IXUSR __S_IEXEC /* Execute by owner. */
175 /* Read, write, and execute by owner. */
176 #define S_IRWXU (__S_IREAD|__S_IWRITE|__S_IEXEC)
178 #if defined __USE_MISC && defined __USE_BSD
179 # define S_IREAD S_IRUSR
180 # define S_IWRITE S_IWUSR
181 # define S_IEXEC S_IXUSR
184 #define S_IRGRP (S_IRUSR >> 3) /* Read by group. */
185 #define S_IWGRP (S_IWUSR >> 3) /* Write by group. */
186 #define S_IXGRP (S_IXUSR >> 3) /* Execute by group. */
187 /* Read, write, and execute by group. */
188 #define S_IRWXG (S_IRWXU >> 3)
190 #define S_IROTH (S_IRGRP >> 3) /* Read by others. */
191 #define S_IWOTH (S_IWGRP >> 3) /* Write by others. */
192 #define S_IXOTH (S_IXGRP >> 3) /* Execute by others. */
193 /* Read, write, and execute by others. */
194 #define S_IRWXO (S_IRWXG >> 3)
198 /* Macros for common mode bit masks. */
199 # define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO) /* 0777 */
200 # define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)/* 07777 */
201 # define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)/* 0666*/
203 # define S_BLKSIZE 512 /* Block size for `st_blocks'. */
207 #ifndef __USE_FILE_OFFSET64
208 /* Get file attributes for FILE and put them in BUF. */
209 extern int stat (__const char *__restrict __file,
210 struct stat *__restrict __buf) __THROW __nonnull ((1, 2));
211 libc_hidden_proto(stat)
213 /* Get file attributes for the file, device, pipe, or socket
214 that file descriptor FD is open on and put them in BUF. */
215 extern int fstat (int __fd, struct stat *__buf) __THROW __nonnull ((2));
216 libc_hidden_proto(fstat)
218 # ifdef __REDIRECT_NTH
219 extern int __REDIRECT_NTH (stat, (__const char *__restrict __file,
220 struct stat *__restrict __buf), stat64)
222 extern int __REDIRECT_NTH (fstat, (int __fd, struct stat *__buf), fstat64)
226 # define fstat fstat64
229 #ifdef __USE_LARGEFILE64
230 extern int stat64 (__const char *__restrict __file,
231 struct stat64 *__restrict __buf) __THROW __nonnull ((1, 2));
232 extern int fstat64 (int __fd, struct stat64 *__buf) __THROW __nonnull ((2));
233 libc_hidden_proto(stat64)
234 libc_hidden_proto(fstat64)
238 /* Similar to stat, get the attributes for FILE and put them in BUF.
239 Relative path names are interpreted relative to FD unless FD is
241 # ifndef __USE_FILE_OFFSET64
242 extern int fstatat (int __fd, __const char *__restrict __file,
243 struct stat *__restrict __buf, int __flag)
244 __THROW __nonnull ((2, 3));
246 # ifdef __REDIRECT_NTH
247 extern int __REDIRECT_NTH (fstatat, (int __fd, __const char *__restrict __file,
248 struct stat *__restrict __buf,
250 fstatat64) __nonnull ((2, 3));
252 # define fstatat fstatat64
256 # ifdef __USE_LARGEFILE64
257 extern int fstatat64 (int __fd, __const char *__restrict __file,
258 struct stat64 *__restrict __buf, int __flag)
259 __THROW __nonnull ((2, 3));
263 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K
264 # ifndef __USE_FILE_OFFSET64
265 /* Get file attributes about FILE and put them in BUF.
266 If FILE is a symbolic link, do not follow it. */
267 extern int lstat (__const char *__restrict __file,
268 struct stat *__restrict __buf) __THROW __nonnull ((1, 2));
269 libc_hidden_proto(lstat)
271 # ifdef __REDIRECT_NTH
272 extern int __REDIRECT_NTH (lstat,
273 (__const char *__restrict __file,
274 struct stat *__restrict __buf), lstat64)
277 # define lstat lstat64
280 # ifdef __USE_LARGEFILE64
281 extern int lstat64 (__const char *__restrict __file,
282 struct stat64 *__restrict __buf)
283 __THROW __nonnull ((1, 2));
284 libc_hidden_proto(lstat64)
288 /* Set file access permissions for FILE to MODE.
289 If FILE is a symbolic link, this affects its target instead. */
290 extern int chmod (__const char *__file, __mode_t __mode)
291 __THROW __nonnull ((1));
292 libc_hidden_proto(chmod)
294 #if 0 /*def __USE_BSD*/
295 /* Set file access permissions for FILE to MODE.
296 If FILE is a symbolic link, this affects the link itself
297 rather than its target. */
298 extern int lchmod (__const char *__file, __mode_t __mode)
299 __THROW __nonnull ((1));
302 /* Set file access permissions of the file FD is open on to MODE. */
303 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
304 extern int fchmod (int __fd, __mode_t __mode) __THROW;
308 /* Set file access permissions of FILE relative to
309 the directory FD is open on. */
310 extern int fchmodat (int __fd, __const char *__file, __mode_t __mode,
312 __THROW __nonnull ((2)) __wur;
313 #endif /* Use ATFILE. */
317 /* Set the file creation mask of the current process to MASK,
318 and return the old creation mask. */
319 extern __mode_t umask (__mode_t __mask) __THROW;
321 #if 0 /*def __USE_GNU*/
322 /* Get the current `umask' value without changing it.
323 This function is only available under the GNU Hurd. */
324 extern __mode_t getumask (void) __THROW;
327 /* Create a new directory named PATH, with permission bits MODE. */
328 extern int mkdir (__const char *__path, __mode_t __mode)
329 __THROW __nonnull ((1));
330 libc_hidden_proto(mkdir)
333 /* Like mkdir, create a new directory with permission bits MODE. But
334 interpret relative PATH names relative to the directory associated
336 extern int mkdirat (int __fd, __const char *__path, __mode_t __mode)
337 __THROW __nonnull ((2));
340 /* Create a device file named PATH, with permission and special bits MODE
341 and device number DEV (which can be constructed from major and minor
342 device numbers with the `makedev' macro above). */
343 #if defined __USE_MISC || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
344 extern int mknod (__const char *__path, __mode_t __mode, __dev_t __dev)
345 __THROW __nonnull ((1));
346 libc_hidden_proto(mknod)
349 /* Like mknod, create a new device file with permission bits MODE and
350 device number DEV. But interpret relative PATH names relative to
351 the directory associated with FD. */
352 extern int mknodat (int __fd, __const char *__path, __mode_t __mode,
353 __dev_t __dev) __THROW __nonnull ((2));
354 libc_hidden_proto(mknodat)
359 /* Create a new FIFO named PATH, with permission bits MODE. */
360 extern int mkfifo (__const char *__path, __mode_t __mode)
361 __THROW __nonnull ((1));
364 /* Like mkfifo, create a new FIFO with permission bits MODE. But
365 interpret relative PATH names relative to the directory associated
367 extern int mkfifoat (int __fd, __const char *__path, __mode_t __mode)
368 __THROW __nonnull ((2));
372 /* Set file access and modification times relative to directory file
374 extern int utimensat (int __fd, __const char *__path,
375 __const struct timespec __times[2],
377 __THROW __nonnull ((2));
378 libc_hidden_proto(utimensat)
381 #ifdef __USE_XOPEN2K8
382 /* Set file access and modification times of the file associated with FD. */
383 extern int futimens (int __fd, __const struct timespec __times[2]) __THROW;
386 /* on uClibc we have unversioned struct stat and mknod.
387 * bits/stat.h is filled with wrong info, so we undo it here. */
396 #endif /* sys/stat.h */